Grub2: missing unregister call for gettext command may lead to use-after-free

Summary

A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the application to access a memory location that is no longer valid. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.

Timeline

1. Nov 18, 2025, 6:20 PM UTCCVE published
2. Nov 18, 2025, 6:44 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Oct 16, 2026, 10:08 AM UTCRecord last updated

Affected versions

• grub2

  through 2.14

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• grub2

  Version range not reported

• openshift/ose-rhel-coreos-8

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

• openshift/ose-rhel-coreos-9

  Version range not reported

References 24